Datasheet

All information in this section is relevant to all members of the 3Com
Switch 5500G Gigabit family, unless otherwise stated.
CONNECTORS
48-port models
48 auto-negotiating 10BASE-T/ 100BASE-TX/1000BASE-T ports,
4 of which are dual-personality 10/100/1000 or SFP Gigabit ports
¥
IEEE 802.3af in-line power on all 10/100/1000 ports for PWR models
24-port SFP model
24 Gigabit SFP ports, 4 of which are dual-personality 10BASE-T/
100BASE-TX/1000BASE-T or SFP Gigabit ports
¥
24-port, other models
24 auto-negotiating 10BASE-T/ 100BASE-TX/1000BASE-T, 4 of which
are dual-personality 10/100/1000 or SFP Gigabit ports
¥
IEEE 802.3af in-line power on all 10/100/1000 ports for PWR models
All models
Application module slot
2 XRN Stacking ports (each 48Gbps full-duplex)
Redundant power supply (-48 VDC) connector
RJ-45 console port
PERFORMANCE
48-port
232.0 Gbps switching capacity, max. (with 2-port 10-Gigabit module)
172.6 Mpps forwarding rate, max. (with 2-port 10-Gigabit module)
142.3 Mpps forwarding rate, max. (with no optional modules)
24-port
184.0 Gbps switching capacity, max. (with 2-port 10-Gigabit module)
136.9 Mpps forwarding rate, max. (with 2-port 10-Gigabit module)
107.1 Mpps forwarding rate, max. (with no optional modules)
All models
Wirespeed performance across all ports within stack or fabric
Store-and-forward switching; latency <10 µs
96 Gbps full-duplex resilient stacking bandwidth
LAYER 2 SWITCHING
16K MAC addresses in address table
1K static MAC addresses, in addition to default address
Jumbo Frame support
4,094 port-based IEEE 802.1Q VLANs
IEEE 802.1 Q-in-Q double-tagged VLANs
IEEE 802.1v protocol-based VLANs
MAC-based VLANs using RADA auto-VLAN assignment
Auto-voice VLAN for automatic vendor-independent segregation and
prioritization of VoIP traffic
IEEE 802.3ad Link Aggregation Control Protocol (LACP); automated and
manual aggregation
Link aggregation trunk groups, per switch:
• 32 groups
• 8 10/100/1000 ports or 4 10-Gigabit ports per group
• 32 Distributed Link Aggregation (DLA) groups
Auto-negotiation and manual configuration of port speed and duplex
IEEE 802.3x full-duplex flow control
Back pressure flow control for half-duplex
Unidirectional Link Detection (UDLD)
Broadcast, Multicast and Unicast traffic suppression
Wake-on-LAN support
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
Bridge Protocol Data Unit (BPDU) protection
Spanning Tree root guard
Internet Group Management Protocol (IGMP) v1, 2 and 3 snooping
IGMP querier
Filtering for 256 multicast groups
Dynamic Host Configuration Protocol Relay (DHCP) Option 82
LAYER 3 SWITCHING
Hardware based routing
256 static routes, in addition to default address
Address Resolution Protocol (ARP) entries: 8K dynamic, 1K static
128 IP interfaces
Routing Information Protocol (RIP), v1 and v2: 2K routes
Open Shortest Path First (OSPF):
• 8 areas with 8 virtual interfaces per area
• 40 neighbors per virtual interface
• Eight virtual links
Protocol Independent Multicast-Dense Mode (PIM-DM)
Protocol Independent Multicast-Sparse Mode (PIM-SM)
IGMP v1 and v2
Border Gateway Protocol (BGPv4)
Equal Cost Multipath Protocol (ECMP); up to three ECMP instances
Multicast VLAN Registration (MVR)
Dynamic Host Configuration Protocol Relay (DHCP Relay): 8 K max.
3Com XRN
®
Technology:
• High-bandwidth 96 Gbps resilient stacking links
• Distributed Link Aggregation, hot-swappable switch units;
high-speed fully resilient trunks up to 40 Gbps
• Distributed Resilient Routing: optimized Layer 3, one routing table
per switch
Virtual Router Redundancy Protocol (VRRP)
CONVERGENCE
8 hardware queues per port
IEEE 802.1p Class of Service/Quality of Service (CoS/QoS) on ingress
and egress
Remarking of packets based on priority:
• Type of Service (ToS)
• IEEE 802.1p CoS
• IP precedence
• Physical port
• Source/destination MAC address
• VLAN information
• Ethertype
• Source/destination IP address
• Source/destination TCP port
• Source/destination UDP port
Traffic redirection
Time-based Access Control Lists (ACLs)
Auto-prioritization of voice traffic determined by vendor OUI
Weighted Round Robin (WRR), including WRR+SP
Strict Priority Queuing (SP)
DiffServ Code Point Expedited Forwarding (DSCP EF) remarking for
prioritization of VoIP traffic
Application rate limiting and blocking on ingress
Port-based traffic shaping on egress
IEEE 802.3af Power over Ethernet standards-compliant (PWR models)
POE (PWR MODELS ONLY)
IEEE 802.3af PoE injection into Cat5 or 5e LAN wiring (300 W total max.)
Supports all standard and most common pre-standard phones, access
points and other PoE devices from selected vendors (Cisco, Nortel,
Philips, Siemens, Avaya, NEC, Polycom, Pingtel, Proxim, et. al.)
Available standards-based supplemental power system enables full
15.4 W to all PoE ports in a switch or stack
SPECIFICATIONS
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3COM SWITCH 5500G GIGABIT FAMILY